Elijah b



(No Model.)

B1B. MARTINDALE.

I IMPERVIOUS PAVING BLOCK. No; 289,289; Patented Nov. 27 1883,-

Minesses [7206706071 'fiwazaM/v the surface of the block.

UNITED STATES PATENT OEEICE.

ELIJAH B. MARTINDALE, OF INDIANAPOLIS, INDIANA.

IMPERVIOUS PAVING-BLOCK;

SPECIFICATION forming part of Letters Patent No. 289,289, dated November 27, .1883.

Application filed September 22, 1883. (No model.)

.10 all whom it may concern.-

Be it known that I, ELIJAH B. MARTINDALE, a citizen of the United States, residing in the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Paving-Blocks, of which the following is a specification.

The object of my said invention is to make a pavement for streets and driveways, which possesses all the advantages of a wooden pavement in the comfort and pleasure of using the same, and all the advantages of a solid asphalt pavement in point of durability. These objects I accomplish by using two or more boards of wood and pressing them, together with a composition of plastic slate, pitch, and coal-tar and cement, into solid blocks of suitable size for laying in the pavement, preferably six (6) inches in depth and twelve (12) inches by ten (10) inches face. The proportion of composition to the boards may be regulated by dropping in narrow strips of wood or lath, which will keep the boards apart and allow the composition to be pressed in and constitute a suitable proportion of the block when completed. The end of the grain should form When the blocks are thus made and-time is given for the composition to harden, they are laid on a road-bed perfectly prepared, with sand as the surface, and the same composition used in making'the blocks should be used in filling the joints between the blocks when laid. a

Referring to the accompanying drawings, which are made a part hereof, Figure 1 is a block made ready for laying, and Fig. 2 is a section of such pavement after it-is laid.

The advantages of a pavement laid in this way are manifold: First, the wood formin the main body of the pavement, being tlioroughly saturated with the composition and in thin boards surrounded by the same, will not decay; second, the wood forming the main surface of the pavement, horses will not slip and fall upon the same when covered with ice 5 places and spaces being perfectly filled with the composition, the pavement is-substantially impervious to water and has not the hollow sound and is not therefore as noisy as the other styles of wooden-block pavement; fourth, the blocks being made perfectly uniform in size, the same may be laid much more evenly and will make a smoother surface and pleasanter driving street than any heretofore made.

A patent (No. 286,321) having been granted the applicant on October 9, 1888, for pave ment-s made of paper, and this application being for a pavement made with composition, but using wood instead of paper, applicant expressly waives any interference with said patent aforesaid.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is

1. A pavement made of blocks composed partly of boards of wood and partly of composition pressed together and laid substantially as set forth 2. A paving-block made of boards of wood immersed in composition and pressed together with composition between each board, substantially as set forth.

3. A block for paving streets and driveways, made of boards of wood cemented and pressed together with composition into a hard and solid block, substantially as set forth.

4. A block made of two or more planks or boards saturated in and pressed together with a composition of coal-tar, pitch, cement, and asphalt under heavy pressure, so as to make one solid composite block for paving purposes, substantially as set forth.

ELIJAH B. MARTINDALE.

In presence of E. H. ROBERTS, THEo. LANGBEIN. 

